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Central unit of the wireless sensors network
Ptáček, Zdeněk ; Macháň, Ladislav (referee) ; Pavlík, Michal (advisor)
This work deals with function and control description of wireless communication circuit nRF24L01+ and its possible use for the creation of local wireless sensor network of star topology. Further studies of the function of sensor network and designs the central control unit for measured data collecting. At the same time discusses the possibility of the battery supply and system optimization.
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Design of the wireless sensor and communication network
Ptáček, Zdeněk ; Šteffan, Pavel (referee) ; Pavlík, Michal (advisor)
The thesis deals with the study of the existing wireless network types, propose and realisation of a dedicated wireless network based on using nRF24L01+ wireless module. The aim is to design a simple, reliable and multifunctional low-cost wireless network. The cellular tree topology and random retransmission delay are used to eliminate cross-talks. Low propagation time is achieved by using ALOHA Access Protocol. Network units cooperate with peripherals in order to measure temperature, humidity, illumination level and other. The power down mode is used to increase duration of battery powered network unit. Practical part of the thesis is focused on creating a computer program to control and set up the network. The network provides a central or autonomous mode.
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Control and monitoring of climate in groups of terrariums
Pavlišin, Tomáš ; Petyovský, Petr (referee) ; Macho, Tomáš (advisor)
The aim of this master thesis is to propose a system for monitoring and regulation the climate in groups of terrariums using Raspberry Pi platform and with subsequent well-arranged representation through the web server. Each group of terrariums has its own measure and regulation device Arduino NANO that wirelessly communicates with central computer Raspberry Pi. The measured values are stored in the MySQL database in central computer. These values are then graphically displayed on the web page. Limit values for regulation and regulation times can also be set through web page.
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The Internet of Things in Practice
Bajgl, Vojtěch ; Vaněk, Jiří (referee) ; Vyroubal, Petr (advisor)
The subject of this diploma thesis, is the Internet of Things, and its use in applied practice, with a subsequent design of a custom system of smart home automatization. It acquaints the reader with the issues of automated home and smart systems, including a basic familiarization of regulations as declared by law about electronic devices. The attributes of miniature computer platforms, developmental boards, and wireless modules for the design of custom systems are analyzed and compared. The biggest part of the thesis is dedicated to a design of a custom system, specifically designing the central processing module and other controlling modules for controlling various electric home appliances. The main controlling unit of the system is a Raspberry Pi 2B unit, with which it is possible to control a device in a household through an user-friendly web application.
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Wireless start blocks
Venkrbec, Lukáš ; Bohrn, Marek (referee) ; Pavlík, Michal (advisor)
This bachelor work describes the design and implementation of a system that will be able to detect the start of the course athletes. By appropriate choice of sensor for detecting the starting reaction athletes, a wireless module for transmitting the information obtained from the sensor to the mobile phone, and also the LCD display. The proposed system will contain a microcontroller ATmega328.
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Shooting sport simulation device
Poloch, Martin ; Musil, Vladislav (referee) ; Šteffan, Pavel (advisor)
The goal of this diploma thesis is to design a shooting sport simulation device. Output of this project should be a market competitive product therefore the design should be focused on low price. Other important aspects are safety, reliability and mutlifunctionality of the whole system. Shooting simulation is based on special technology of sensing laser beams with LED developed in author´s bachelor thesis. The system is controlled by a group of microcontrollers. Their program running and communication is a key part of this thesis.
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Data concentrator
Dvorský, Petr ; Arm, Jakub (referee) ; Fiedler, Petr (advisor)
The topic of this thesis is the design and realization of a modular Data concentrator for various types of measurements in diverse conditions. The device conception, basic principles, design and functionality are described herein. Also, the lightweight protocol design for radio communication, standardized XML format for data storage and cloud usage are described. The electrical design of the device as well as the design of the printed circuit board was made using the Eagle Autodesk electronic design automation software (Eagle Autodesk EDA). The control software written in C/C++ for a target microcontroller (ESP32-WROOM-32) is based on a FreeRTOS platform and ESP-IDF framework. An IDE for managing this software is Visual Studio Code with PlatformIO extension. Selected and used Cloud Platform is ThingSpeak from Mathworks, which uses certain components from Matlab platform.
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Low-power wireless sensor node with ATMEGA328
Klvaňa, Jakub ; Pál, Tamás (referee) ; Krajsa, Ondřej (advisor)
The aim of this semestral thesis is to design low-power wireless sensor node, which will be used to measure temperature, humidity and pressure. The first part deals with the central unit, which will collect and process the measured data. The second part is devoted to design for a wireless node that is formed by ATMega328 microcontroller, three sensors (temperature, pressure and humidity), baterry which is charged by photovoltaic cell and the wireless module. Conclusion is a brief summary of this work and outlines follow-up procedure in dealing with the bachelor’s thesis.
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The library for working with sensors allowing distributed processing in FORTH language
Kudela, Kryštof ; Valach, Soběslav (referee) ; Jirgl, Miroslav (advisor)
This semestral work is about programming language Forth, variation of operating systems, analysis of microcontroller unit, definition of intelligent sensors and distributed systems and distributed computing. The purpose of this work is introduce the reader to entire Forth development platform, where first chapter is learning how to program in Forth, then there are informations about the FlashForth and AmForth operating systems. The MCU chapter describes the microcontroller unit, where they are used and its division. Next chapters are about definition of smart sensors and theoretical introduction to distributed systems and distributed computing, which contain also a multitasking solution in Forth. A network is created in Forth that allows remote control using a wireless module.
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